Frame of reference for Fermi Golden Rule

  • Thread starter paultsui
  • Start date
Hi guys. I am currently studying Sub-atomic physics and it seems to me that there are different formulas that work in different frame of reference.

In particular, I would like to ask:

1. Which frame should we use in applying Fermi's Golden Rule? (I've read somewhere that the matrix element is invariant, but I assume the density of states must be frame dependent)

2. The resolution of a probe is defined by its de Broglie wavelength. Once again, this is frame dependent, so which frame should we use to determine a probe's resolution.

3. Is there a general rule of thumb when deciding which frame to use when applying a formula? (It seems to me that most of the problems are done in Zero momentum frame, or is it?)

Thank you so much guysss!

Want to reply to this thread?

"Frame of reference for Fermi Golden Rule" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving